Solutions
Mini-Quiz
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ELECTROTECHNOLOGY
ELTK1100
ASSIGNMENT #1
1.
Name the six ways to generate EMF and provide an example for each way.
2.
What is the difference between the Negative Pole and the Positive Pole of a battery
( Two words )?
3.
Would two electrons repel or attract each other? Explain.
4.
What is an atom? What particles form an atom? Draw a drawing of a Helium atom.
5.
Explain why Copper (29 electrons 2-8-18-1) or Silver (47 electrons 2-8-18-18-1) are
good conductors of Electricity.
6.
What is EMF?
7.
Complete the table by filling in the correct resistor value and tolerance.
First
Band
Second
Band
Multiplier
Tolerance
Red
Brown
Orange
Silver
Brown
Black
Brown
Green
Blue
Gold
Silver
Violet
Grey
Red
Gold
White
Red
Green
Orange
Orange
Silver
Blue
Green
Red
Grey
Yellow
Gold
Gold
Yellow
Violet
Yellow
Silver
Brown
White
Black
Resistor Value
Gold
Write resistance down as whole numbers 1000.
ELTK1100
Marine Institute
Rev 3
132
8.
For the given resistor values, complete the following table.
Resistor Value
First Band
Second Band
Multiplier
Tolerance
1.3k 10%
78k 20%
0.1 5%
910k 20%
0.39 5%
220 10%
0.82k 5%
47 10%
0.68M 20%
5.4 5%
If a box is No Color make sure you put that in. A blank box for No Color is wrong.
9.
Complete the following Table.
Name of the
Electrical Term
Symbol for
Term
Measurement
Unit
Measurement
Abbreviation
Measurement
Instrument
EMF
Current
Resistance
10.
Define tolerance (with regard to the resistor color code)?
A resistor is color coded as 220 ± 10% (Red, Red, Brown, Silver). Use this
resistor to illustrate how tolerance works.
11.
How much current is flowing if 9mC of charge flow past a point in 6s? How many
electrons flowed past the point?
12.
How many electrons must be removed from a charged pair of wool socks with a
-1C charge to give it a charge of +2.3 C ?
ELTK1100
Marine Institute
Rev 3
133
13.
Express the following electrical prefixes and terms as regular decimal numbers and
as scientific notation (a number between 1 and 10 times a power of 10).
Electrical Quantity
Integer/Decimal #
0.035 Megahertz
Scientific Notation
3.5 * 104
35000
Giga means
Nano means
0.0065 Megaohm
14.31818 Megahertz
50 Kilovolts
0.005 Millifarad
850 Picofarad
5.6 Microfarad
14.
Complete the following table by converting as specified.
330 k
M
0.00002 F
F
pF
0.2 mA
A
A
0.05 A
A
mA
470 M
k
10 kV
MV
mV
56000000 M
k
15.
Find the current when a resistance of 500 is connected to a 10 Volt Battery.
16.
What resistance will cause a current of 25 A, if the electromotive force is 120V.
17.
What electromotive force is required to send a current of 0.75 mA through a 0.2 M
resistor.
ELTK1100
Marine Institute
Rev 3
134